./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a340dc1e9a375ad2082e9c8cecf3a1a681edcfe0f7220085504fa1991ced3d70 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:58:01,342 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:58:01,431 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:58:01,436 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:58:01,436 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:58:01,474 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:58:01,475 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:58:01,475 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:58:01,475 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:58:01,475 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:58:01,475 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:58:01,476 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:58:01,476 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:58:01,476 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:58:01,476 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:58:01,477 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:58:01,477 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:58:01,477 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:58:01,477 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:58:01,477 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:58:01,477 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:58:01,477 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:58:01,478 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:58:01,478 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:58:01,478 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:58:01,478 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:58:01,478 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:58:01,478 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:58:01,479 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:58:01,479 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:58:01,479 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:58:01,479 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:58:01,479 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:58:01,479 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:58:01,479 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:58:01,479 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:58:01,479 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:58:01,479 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:58:01,479 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:58:01,479 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:58:01,480 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:58:01,480 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:58:01,480 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:58:01,480 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:58:01,480 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:58:01,480 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:58:01,481 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:58:01,481 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:58:01,481 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a340dc1e9a375ad2082e9c8cecf3a1a681edcfe0f7220085504fa1991ced3d70 [2024-11-28 04:58:01,784 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:58:01,793 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:58:01,795 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:58:01,796 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:58:01,797 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:58:01,798 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound10.c [2024-11-28 04:58:04,890 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/bin/uautomizer-verify-aQ6SnzHsRB/data/2a60e7052/a5672639999b4538b2d6feab4a799475/FLAGa839689ac [2024-11-28 04:58:05,158 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:58:05,158 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound10.c [2024-11-28 04:58:05,171 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/bin/uautomizer-verify-aQ6SnzHsRB/data/2a60e7052/a5672639999b4538b2d6feab4a799475/FLAGa839689ac [2024-11-28 04:58:05,483 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/bin/uautomizer-verify-aQ6SnzHsRB/data/2a60e7052/a5672639999b4538b2d6feab4a799475 [2024-11-28 04:58:05,487 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:58:05,488 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:58:05,491 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:58:05,492 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:58:05,497 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:58:05,498 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:58:05" (1/1) ... [2024-11-28 04:58:05,501 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@349de98e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:58:05, skipping insertion in model container [2024-11-28 04:58:05,501 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:58:05" (1/1) ... [2024-11-28 04:58:05,517 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:58:05,673 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound10.c[576,589] [2024-11-28 04:58:05,703 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:58:05,714 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:58:05,728 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound10.c[576,589] [2024-11-28 04:58:05,739 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:58:05,757 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:58:05,758 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:58:05 WrapperNode [2024-11-28 04:58:05,759 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:58:05,761 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:58:05,762 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:58:05,762 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:58:05,770 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:58:05" (1/1) ... [2024-11-28 04:58:05,777 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:58:05" (1/1) ... [2024-11-28 04:58:05,796 INFO L138 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2024-11-28 04:58:05,796 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:58:05,797 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:58:05,798 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:58:05,798 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:58:05,806 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:58:05" (1/1) ... [2024-11-28 04:58:05,806 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:58:05" (1/1) ... [2024-11-28 04:58:05,807 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:58:05" (1/1) ... [2024-11-28 04:58:05,823 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 04:58:05,825 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:58:05" (1/1) ... [2024-11-28 04:58:05,825 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:58:05" (1/1) ... [2024-11-28 04:58:05,829 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:58:05" (1/1) ... [2024-11-28 04:58:05,832 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:58:05" (1/1) ... [2024-11-28 04:58:05,839 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:58:05" (1/1) ... [2024-11-28 04:58:05,840 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:58:05" (1/1) ... [2024-11-28 04:58:05,841 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:58:05" (1/1) ... [2024-11-28 04:58:05,842 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:58:05,847 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:58:05,847 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:58:05,847 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:58:05,848 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:58:05" (1/1) ... [2024-11-28 04:58:05,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:58:05,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:58:05,888 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:58:05,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:58:05,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:58:05,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:58:05,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:58:05,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:58:05,924 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 04:58:05,925 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 04:58:05,990 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:58:05,992 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:58:06,168 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-28 04:58:06,168 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:58:06,178 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:58:06,179 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 04:58:06,179 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:58:06 BoogieIcfgContainer [2024-11-28 04:58:06,179 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:58:06,182 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:58:06,182 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:58:06,189 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:58:06,190 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:58:05" (1/3) ... [2024-11-28 04:58:06,191 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267c058a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:58:06, skipping insertion in model container [2024-11-28 04:58:06,192 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:58:05" (2/3) ... [2024-11-28 04:58:06,192 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267c058a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:58:06, skipping insertion in model container [2024-11-28 04:58:06,192 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:58:06" (3/3) ... [2024-11-28 04:58:06,194 INFO L128 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_unwindbound10.c [2024-11-28 04:58:06,216 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:58:06,218 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG cohendiv-ll_unwindbound10.c that has 2 procedures, 29 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-28 04:58:06,290 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:58:06,307 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4011ad5a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:58:06,310 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:58:06,314 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-28 04:58:06,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-28 04:58:06,322 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:58:06,323 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:58:06,324 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:58:06,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:58:06,329 INFO L85 PathProgramCache]: Analyzing trace with hash -555122024, now seen corresponding path program 1 times [2024-11-28 04:58:06,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:58:06,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145094869] [2024-11-28 04:58:06,336 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:58:06,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:58:06,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:58:06,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:58:06,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:58:06,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145094869] [2024-11-28 04:58:06,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145094869] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:58:06,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:58:06,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:58:06,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653641] [2024-11-28 04:58:06,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:58:06,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 04:58:06,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:58:06,524 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 04:58:06,525 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:58:06,527 INFO L87 Difference]: Start difference. First operand has 29 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:58:06,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:58:06,553 INFO L93 Difference]: Finished difference Result 55 states and 87 transitions. [2024-11-28 04:58:06,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 04:58:06,557 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-28 04:58:06,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:58:06,563 INFO L225 Difference]: With dead ends: 55 [2024-11-28 04:58:06,563 INFO L226 Difference]: Without dead ends: 25 [2024-11-28 04:58:06,568 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:58:06,573 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:58:06,574 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:58:06,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-28 04:58:06,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-28 04:58:06,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.3125) internal successors, (21), 17 states have internal predecessors, (21), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 04:58:06,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2024-11-28 04:58:06,620 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 9 [2024-11-28 04:58:06,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:58:06,620 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2024-11-28 04:58:06,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:58:06,620 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2024-11-28 04:58:06,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-28 04:58:06,621 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:58:06,622 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:58:06,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:58:06,622 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:58:06,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:58:06,623 INFO L85 PathProgramCache]: Analyzing trace with hash -2015424641, now seen corresponding path program 1 times [2024-11-28 04:58:06,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:58:06,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367250895] [2024-11-28 04:58:06,623 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:58:06,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:58:06,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:58:06,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1218149837] [2024-11-28 04:58:06,668 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:58:06,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:58:06,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:58:06,674 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:58:06,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:58:06,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:58:06,734 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:58:06,742 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:58:06,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:58:06,907 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:58:06,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:58:06,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367250895] [2024-11-28 04:58:06,908 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:58:06,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218149837] [2024-11-28 04:58:06,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218149837] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:58:06,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:58:06,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:58:06,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173973545] [2024-11-28 04:58:06,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:58:06,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:58:06,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:58:06,913 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:58:06,914 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:58:06,914 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:58:06,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:58:06,997 INFO L93 Difference]: Finished difference Result 37 states and 49 transitions. [2024-11-28 04:58:06,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:58:06,999 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-28 04:58:06,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:58:07,000 INFO L225 Difference]: With dead ends: 37 [2024-11-28 04:58:07,000 INFO L226 Difference]: Without dead ends: 35 [2024-11-28 04:58:07,001 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:58:07,002 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 5 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:58:07,002 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 111 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:58:07,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-28 04:58:07,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2024-11-28 04:58:07,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 23 states have internal predecessors, (27), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-28 04:58:07,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2024-11-28 04:58:07,020 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 10 [2024-11-28 04:58:07,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:58:07,034 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2024-11-28 04:58:07,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:58:07,035 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2024-11-28 04:58:07,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-28 04:58:07,035 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:58:07,035 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:58:07,046 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:58:07,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-28 04:58:07,236 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:58:07,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:58:07,236 INFO L85 PathProgramCache]: Analyzing trace with hash -2013220107, now seen corresponding path program 1 times [2024-11-28 04:58:07,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:58:07,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432436623] [2024-11-28 04:58:07,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:58:07,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:58:07,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:58:07,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:58:07,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:58:07,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432436623] [2024-11-28 04:58:07,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432436623] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:58:07,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:58:07,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:58:07,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160877922] [2024-11-28 04:58:07,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:58:07,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:58:07,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:58:07,312 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:58:07,312 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:58:07,313 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:58:07,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:58:07,337 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2024-11-28 04:58:07,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:58:07,338 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-28 04:58:07,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:58:07,339 INFO L225 Difference]: With dead ends: 39 [2024-11-28 04:58:07,340 INFO L226 Difference]: Without dead ends: 32 [2024-11-28 04:58:07,340 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:58:07,341 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:58:07,342 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:58:07,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-28 04:58:07,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-28 04:58:07,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 23 states have internal predecessors, (26), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-28 04:58:07,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2024-11-28 04:58:07,355 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 10 [2024-11-28 04:58:07,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:58:07,355 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2024-11-28 04:58:07,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:58:07,357 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2024-11-28 04:58:07,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-28 04:58:07,357 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:58:07,357 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:58:07,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:58:07,358 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:58:07,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:58:07,358 INFO L85 PathProgramCache]: Analyzing trace with hash 301682685, now seen corresponding path program 1 times [2024-11-28 04:58:07,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:58:07,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039979153] [2024-11-28 04:58:07,359 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:58:07,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:58:07,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:58:07,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1616841576] [2024-11-28 04:58:07,398 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:58:07,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:58:07,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:58:07,402 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:58:07,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:58:07,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:58:07,474 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:58:07,476 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:58:07,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:58:07,568 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:58:07,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:58:07,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039979153] [2024-11-28 04:58:07,569 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:58:07,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616841576] [2024-11-28 04:58:07,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616841576] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:58:07,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:58:07,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:58:07,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442970174] [2024-11-28 04:58:07,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:58:07,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:58:07,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:58:07,571 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:58:07,571 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:58:07,571 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:58:07,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:58:07,666 INFO L93 Difference]: Finished difference Result 50 states and 66 transitions. [2024-11-28 04:58:07,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:58:07,667 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2024-11-28 04:58:07,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:58:07,668 INFO L225 Difference]: With dead ends: 50 [2024-11-28 04:58:07,668 INFO L226 Difference]: Without dead ends: 47 [2024-11-28 04:58:07,668 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:58:07,669 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 11 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:58:07,669 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 100 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:58:07,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-28 04:58:07,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2024-11-28 04:58:07,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 30 states have internal predecessors, (36), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-28 04:58:07,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 61 transitions. [2024-11-28 04:58:07,679 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 61 transitions. Word has length 15 [2024-11-28 04:58:07,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:58:07,679 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 61 transitions. [2024-11-28 04:58:07,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:58:07,680 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 61 transitions. [2024-11-28 04:58:07,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-28 04:58:07,680 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:58:07,681 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:58:07,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 04:58:07,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-28 04:58:07,885 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:58:07,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:58:07,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1801463492, now seen corresponding path program 1 times [2024-11-28 04:58:07,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:58:07,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727313307] [2024-11-28 04:58:07,886 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:58:07,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:58:07,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:58:07,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [787365738] [2024-11-28 04:58:07,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:58:07,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:58:07,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:58:07,930 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:58:07,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:58:08,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:58:08,005 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:58:08,006 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:58:08,079 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:58:08,079 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:58:08,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:58:08,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727313307] [2024-11-28 04:58:08,079 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:58:08,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787365738] [2024-11-28 04:58:08,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787365738] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:58:08,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:58:08,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:58:08,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619858396] [2024-11-28 04:58:08,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:58:08,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:58:08,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:58:08,081 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:58:08,081 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:58:08,084 INFO L87 Difference]: Start difference. First operand 46 states and 61 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:58:08,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:58:08,193 INFO L93 Difference]: Finished difference Result 75 states and 105 transitions. [2024-11-28 04:58:08,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:58:08,194 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2024-11-28 04:58:08,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:58:08,199 INFO L225 Difference]: With dead ends: 75 [2024-11-28 04:58:08,199 INFO L226 Difference]: Without dead ends: 73 [2024-11-28 04:58:08,199 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:58:08,200 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 11 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:58:08,201 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 117 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:58:08,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-28 04:58:08,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 66. [2024-11-28 04:58:08,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 41 states have (on average 1.2926829268292683) internal successors, (53), 43 states have internal predecessors, (53), 20 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-28 04:58:08,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 92 transitions. [2024-11-28 04:58:08,223 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 92 transitions. Word has length 23 [2024-11-28 04:58:08,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:58:08,224 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 92 transitions. [2024-11-28 04:58:08,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:58:08,224 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 92 transitions. [2024-11-28 04:58:08,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-28 04:58:08,225 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:58:08,225 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:58:08,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 04:58:08,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:58:08,430 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:58:08,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:58:08,430 INFO L85 PathProgramCache]: Analyzing trace with hash -209052785, now seen corresponding path program 1 times [2024-11-28 04:58:08,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:58:08,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412960002] [2024-11-28 04:58:08,430 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:58:08,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:58:08,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:58:08,602 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:58:08,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:58:08,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412960002] [2024-11-28 04:58:08,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412960002] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:58:08,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:58:08,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:58:08,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869699940] [2024-11-28 04:58:08,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:58:08,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:58:08,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:58:08,604 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:58:08,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:58:08,604 INFO L87 Difference]: Start difference. First operand 66 states and 92 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:58:08,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:58:08,659 INFO L93 Difference]: Finished difference Result 105 states and 145 transitions. [2024-11-28 04:58:08,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:58:08,660 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2024-11-28 04:58:08,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:58:08,663 INFO L225 Difference]: With dead ends: 105 [2024-11-28 04:58:08,665 INFO L226 Difference]: Without dead ends: 70 [2024-11-28 04:58:08,665 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:58:08,666 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 5 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:58:08,669 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 110 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:58:08,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-28 04:58:08,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2024-11-28 04:58:08,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 44 states have (on average 1.25) internal successors, (55), 46 states have internal predecessors, (55), 20 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-28 04:58:08,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 94 transitions. [2024-11-28 04:58:08,683 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 94 transitions. Word has length 26 [2024-11-28 04:58:08,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:58:08,684 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 94 transitions. [2024-11-28 04:58:08,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:58:08,684 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 94 transitions. [2024-11-28 04:58:08,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-28 04:58:08,685 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:58:08,685 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:58:08,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 04:58:08,685 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:58:08,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:58:08,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1928529148, now seen corresponding path program 1 times [2024-11-28 04:58:08,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:58:08,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781684820] [2024-11-28 04:58:08,686 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:58:08,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:58:08,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:58:08,998 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 04:58:08,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:58:08,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781684820] [2024-11-28 04:58:08,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781684820] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:58:08,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:58:08,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 04:58:08,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513205680] [2024-11-28 04:58:08,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:58:08,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:58:08,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:58:09,000 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:58:09,000 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:58:09,000 INFO L87 Difference]: Start difference. First operand 70 states and 94 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 04:58:09,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:58:09,108 INFO L93 Difference]: Finished difference Result 76 states and 99 transitions. [2024-11-28 04:58:09,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:58:09,109 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2024-11-28 04:58:09,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:58:09,110 INFO L225 Difference]: With dead ends: 76 [2024-11-28 04:58:09,110 INFO L226 Difference]: Without dead ends: 74 [2024-11-28 04:58:09,111 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:58:09,111 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 13 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:58:09,112 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 122 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:58:09,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-28 04:58:09,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2024-11-28 04:58:09,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 47 states have (on average 1.2340425531914894) internal successors, (58), 49 states have internal predecessors, (58), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-28 04:58:09,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 97 transitions. [2024-11-28 04:58:09,127 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 97 transitions. Word has length 33 [2024-11-28 04:58:09,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:58:09,128 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 97 transitions. [2024-11-28 04:58:09,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 04:58:09,128 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 97 transitions. [2024-11-28 04:58:09,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-28 04:58:09,129 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:58:09,129 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:58:09,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 04:58:09,130 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:58:09,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:58:09,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1123887410, now seen corresponding path program 1 times [2024-11-28 04:58:09,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:58:09,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324886947] [2024-11-28 04:58:09,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:58:09,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:58:09,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:58:09,400 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-28 04:58:09,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:58:09,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324886947] [2024-11-28 04:58:09,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324886947] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:58:09,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421771962] [2024-11-28 04:58:09,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:58:09,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:58:09,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:58:09,405 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:58:09,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:58:09,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:58:09,469 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:58:09,471 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:58:09,633 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-28 04:58:09,633 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:58:09,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421771962] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:58:09,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:58:09,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-28 04:58:09,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200537511] [2024-11-28 04:58:09,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:58:09,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:58:09,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:58:09,634 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:58:09,635 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:58:09,635 INFO L87 Difference]: Start difference. First operand 74 states and 97 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 04:58:09,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:58:09,776 INFO L93 Difference]: Finished difference Result 87 states and 113 transitions. [2024-11-28 04:58:09,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:58:09,777 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 39 [2024-11-28 04:58:09,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:58:09,779 INFO L225 Difference]: With dead ends: 87 [2024-11-28 04:58:09,779 INFO L226 Difference]: Without dead ends: 85 [2024-11-28 04:58:09,779 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:58:09,780 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 11 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:58:09,780 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 152 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:58:09,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-28 04:58:09,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 80. [2024-11-28 04:58:09,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 50 states have (on average 1.22) internal successors, (61), 54 states have internal predecessors, (61), 22 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (21), 18 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-28 04:58:09,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 104 transitions. [2024-11-28 04:58:09,806 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 104 transitions. Word has length 39 [2024-11-28 04:58:09,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:58:09,807 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 104 transitions. [2024-11-28 04:58:09,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 04:58:09,811 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 104 transitions. [2024-11-28 04:58:09,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-28 04:58:09,811 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:58:09,812 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:58:09,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 04:58:10,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:58:10,012 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:58:10,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:58:10,013 INFO L85 PathProgramCache]: Analyzing trace with hash 432267331, now seen corresponding path program 1 times [2024-11-28 04:58:10,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:58:10,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796832434] [2024-11-28 04:58:10,013 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:58:10,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:58:10,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:58:10,111 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-28 04:58:10,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:58:10,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796832434] [2024-11-28 04:58:10,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796832434] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:58:10,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056293952] [2024-11-28 04:58:10,111 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:58:10,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:58:10,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:58:10,115 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:58:10,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:58:10,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:58:10,174 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:58:10,176 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:58:10,251 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 04:58:10,252 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:58:10,372 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-28 04:58:10,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056293952] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:58:10,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:58:10,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 6] total 10 [2024-11-28 04:58:10,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298978134] [2024-11-28 04:58:10,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:58:10,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 04:58:10,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:58:10,374 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 04:58:10,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:58:10,375 INFO L87 Difference]: Start difference. First operand 80 states and 104 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 5 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-28 04:58:10,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:58:10,638 INFO L93 Difference]: Finished difference Result 247 states and 304 transitions. [2024-11-28 04:58:10,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:58:10,640 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 5 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 42 [2024-11-28 04:58:10,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:58:10,643 INFO L225 Difference]: With dead ends: 247 [2024-11-28 04:58:10,643 INFO L226 Difference]: Without dead ends: 240 [2024-11-28 04:58:10,644 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2024-11-28 04:58:10,646 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 87 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:58:10,646 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 160 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:58:10,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-11-28 04:58:10,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 224. [2024-11-28 04:58:10,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 144 states have (on average 1.2013888888888888) internal successors, (173), 153 states have internal predecessors, (173), 55 states have call successors, (55), 24 states have call predecessors, (55), 24 states have return successors, (51), 46 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-28 04:58:10,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 279 transitions. [2024-11-28 04:58:10,713 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 279 transitions. Word has length 42 [2024-11-28 04:58:10,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:58:10,714 INFO L471 AbstractCegarLoop]: Abstraction has 224 states and 279 transitions. [2024-11-28 04:58:10,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 5 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-28 04:58:10,715 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 279 transitions. [2024-11-28 04:58:10,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-28 04:58:10,719 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:58:10,719 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:58:10,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 04:58:10,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:58:10,920 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:58:10,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:58:10,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1900430191, now seen corresponding path program 1 times [2024-11-28 04:58:10,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:58:10,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007987837] [2024-11-28 04:58:10,920 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:58:10,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:58:10,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:58:10,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [548889173] [2024-11-28 04:58:10,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:58:10,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:58:10,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:58:10,954 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:58:10,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:58:11,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:58:11,018 INFO L256 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 04:58:11,020 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:58:11,450 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-28 04:58:11,450 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:58:11,738 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-28 04:58:11,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:58:11,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007987837] [2024-11-28 04:58:11,739 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:58:11,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548889173] [2024-11-28 04:58:11,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548889173] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 04:58:11,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:58:11,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2024-11-28 04:58:11,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121685054] [2024-11-28 04:58:11,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:58:11,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:58:11,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:58:11,740 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:58:11,741 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2024-11-28 04:58:11,741 INFO L87 Difference]: Start difference. First operand 224 states and 279 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-28 04:58:11,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:58:11,948 INFO L93 Difference]: Finished difference Result 242 states and 296 transitions. [2024-11-28 04:58:11,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:58:11,948 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 47 [2024-11-28 04:58:11,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:58:11,950 INFO L225 Difference]: With dead ends: 242 [2024-11-28 04:58:11,951 INFO L226 Difference]: Without dead ends: 236 [2024-11-28 04:58:11,951 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2024-11-28 04:58:11,952 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 35 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:58:11,952 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 83 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:58:11,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2024-11-28 04:58:12,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 171. [2024-11-28 04:58:12,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 112 states have (on average 1.1339285714285714) internal successors, (127), 117 states have internal predecessors, (127), 36 states have call successors, (36), 22 states have call predecessors, (36), 22 states have return successors, (36), 31 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-28 04:58:12,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 199 transitions. [2024-11-28 04:58:12,004 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 199 transitions. Word has length 47 [2024-11-28 04:58:12,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:58:12,004 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 199 transitions. [2024-11-28 04:58:12,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-28 04:58:12,005 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 199 transitions. [2024-11-28 04:58:12,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-28 04:58:12,006 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:58:12,006 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:58:12,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 04:58:12,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:58:12,211 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:58:12,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:58:12,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1655941803, now seen corresponding path program 1 times [2024-11-28 04:58:12,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:58:12,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481395813] [2024-11-28 04:58:12,211 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:58:12,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:58:12,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:58:12,475 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-11-28 04:58:12,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:58:12,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481395813] [2024-11-28 04:58:12,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481395813] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:58:12,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340727835] [2024-11-28 04:58:12,476 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:58:12,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:58:12,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:58:12,478 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:58:12,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:58:12,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:58:12,540 INFO L256 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 04:58:12,542 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:58:12,611 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-11-28 04:58:12,611 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:58:12,740 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-11-28 04:58:12,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340727835] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:58:12,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:58:12,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 11 [2024-11-28 04:58:12,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138885176] [2024-11-28 04:58:12,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:58:12,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:58:12,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:58:12,743 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:58:12,744 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:58:12,744 INFO L87 Difference]: Start difference. First operand 171 states and 199 transitions. Second operand has 11 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-28 04:58:12,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:58:12,913 INFO L93 Difference]: Finished difference Result 183 states and 208 transitions. [2024-11-28 04:58:12,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:58:12,914 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 63 [2024-11-28 04:58:12,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:58:12,914 INFO L225 Difference]: With dead ends: 183 [2024-11-28 04:58:12,915 INFO L226 Difference]: Without dead ends: 0 [2024-11-28 04:58:12,915 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 120 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:58:12,916 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 12 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:58:12,916 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 84 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:58:12,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-28 04:58:12,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-28 04:58:12,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:58:12,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-28 04:58:12,918 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 63 [2024-11-28 04:58:12,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:58:12,918 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-28 04:58:12,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-28 04:58:12,918 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-28 04:58:12,918 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-28 04:58:12,921 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-28 04:58:12,931 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 04:58:13,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:58:13,124 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:58:13,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-28 04:58:14,357 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 04:58:14,377 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:58:14 BoogieIcfgContainer [2024-11-28 04:58:14,380 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 04:58:14,381 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 04:58:14,381 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 04:58:14,381 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 04:58:14,382 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:58:06" (3/4) ... [2024-11-28 04:58:14,384 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-28 04:58:14,390 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-28 04:58:14,395 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-28 04:58:14,395 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-28 04:58:14,395 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-28 04:58:14,396 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-28 04:58:14,491 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 04:58:14,491 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 04:58:14,491 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 04:58:14,493 INFO L158 Benchmark]: Toolchain (without parser) took 9004.20ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 92.8MB in the beginning and 109.0MB in the end (delta: -16.2MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. [2024-11-28 04:58:14,494 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 117.4MB. Free memory is still 74.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:58:14,494 INFO L158 Benchmark]: CACSL2BoogieTranslator took 269.39ms. Allocated memory is still 117.4MB. Free memory was 92.6MB in the beginning and 81.2MB in the end (delta: 11.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:58:14,495 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.71ms. Allocated memory is still 117.4MB. Free memory was 81.2MB in the beginning and 80.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:58:14,495 INFO L158 Benchmark]: Boogie Preprocessor took 49.41ms. Allocated memory is still 117.4MB. Free memory was 80.2MB in the beginning and 78.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:58:14,496 INFO L158 Benchmark]: RCFGBuilder took 332.56ms. Allocated memory is still 117.4MB. Free memory was 78.9MB in the beginning and 67.9MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:58:14,496 INFO L158 Benchmark]: TraceAbstraction took 8198.12ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 67.3MB in the beginning and 114.4MB in the end (delta: -47.2MB). Peak memory consumption was 63.5MB. Max. memory is 16.1GB. [2024-11-28 04:58:14,497 INFO L158 Benchmark]: Witness Printer took 110.57ms. Allocated memory is still 142.6MB. Free memory was 114.4MB in the beginning and 109.0MB in the end (delta: 5.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:58:14,498 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 117.4MB. Free memory is still 74.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 269.39ms. Allocated memory is still 117.4MB. Free memory was 92.6MB in the beginning and 81.2MB in the end (delta: 11.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.71ms. Allocated memory is still 117.4MB. Free memory was 81.2MB in the beginning and 80.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 49.41ms. Allocated memory is still 117.4MB. Free memory was 80.2MB in the beginning and 78.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 332.56ms. Allocated memory is still 117.4MB. Free memory was 78.9MB in the beginning and 67.9MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 8198.12ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 67.3MB in the beginning and 114.4MB in the end (delta: -47.2MB). Peak memory consumption was 63.5MB. Max. memory is 16.1GB. * Witness Printer took 110.57ms. Allocated memory is still 142.6MB. Free memory was 114.4MB in the beginning and 109.0MB in the end (delta: 5.4MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.9s, OverallIterations: 11, TraceHistogramMax: 10, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 210 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 190 mSDsluCounter, 1166 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 839 mSDsCounter, 62 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 466 IncrementalHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 62 mSolverCounterUnsat, 327 mSDtfsCounter, 466 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 438 GetRequests, 360 SyntacticMatches, 4 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=224occurred in iteration=9, InterpolantAutomatonStates: 65, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 97 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 556 NumberOfCodeBlocks, 556 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 596 ConstructedInterpolants, 0 QuantifiedInterpolants, 1574 SizeOfPredicates, 13 NumberOfNonLiveVariables, 712 ConjunctsInSsa, 69 ConjunctsInUnsatCore, 17 InterpolantComputations, 9 PerfectInterpolantSequences, 905/967 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((x == (r + ((__int128) q * y))) && (1 <= y)) && (((__int128) b + x) == ((((__int128) a * y) + r) + ((__int128) q * y)))) - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: ((((((__int128) a * y) == b) && (1 <= y)) && (1 <= r)) && (((__int128) b + x) == ((((__int128) a * y) + r) + ((__int128) q * y)))) RESULT: Ultimate proved your program to be correct! [2024-11-28 04:58:14,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8063724a-e8d2-4913-95a3-6a54a80be6a9/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE